Seems not to be buildable with maven 2.0.5

[michaelNGV]

Please see attached build log. It starts:

[INFO] Scanning for projects...
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for de.serviceflow:codegenj:jar:2.0.5
[WARNING] 'build.plugins.plugin.(groupId:artifactId)' must be unique but found duplicate declaration of plugin org.jacoco:jacoco-maven-plugin @ line 373, column 12
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.

build.log